+++ /dev/null
-/*
- * Geeqie
- * (C) 2004 John Ellis
- * Copyright (C) 2008 - 2009 The Geeqie Team
- *
- * Author: John Ellis
- *
- * This software is released under the GNU General Public License (GNU GPL).
- * Please read the included file COPYING for more information.
- * This software comes with no warranty of any kind, use at your own risk!
- */
-
-
-#include "main.h"
-#include "image-load.h"
-
-#include "exif.h"
-#include "filedata.h"
-#include "ui_fileops.h"
-#include "gq-marshal.h"
-
-#include <fcntl.h>
-#include <sys/mman.h>
-
-#define IMAGE_LOADER_READ_BUFFER_SIZE_DEFAULT 4096
-#define IMAGE_LOADER_IDLE_READ_LOOP_COUNT_DEFAULT 1
-
-
-/**************************************************************************************/
-/* image loader class */
-
-
-enum {
- SIGNAL_AREA_READY = 0,
- SIGNAL_ERROR,
- SIGNAL_DONE,
- SIGNAL_PERCENT,
- SIGNAL_COUNT
-};
-
-static guint signals[SIGNAL_COUNT] = { 0 };
-
-static void image_loader_init(GTypeInstance *instance, gpointer g_class);
-static void image_loader_class_init(ImageLoaderClass *class);
-static void image_loader_finalize(GObject *object);
-static void image_loader_stop(ImageLoader *il);
-
-GType image_loader_get_type(void)
-{
- static GType type = 0;
- if (type == 0)
- {
- static const GTypeInfo info = {
- sizeof(ImageLoaderClass),
- NULL, /* base_init */
- NULL, /* base_finalize */
- (GClassInitFunc)image_loader_class_init, /* class_init */
- NULL, /* class_finalize */
- NULL, /* class_data */
- sizeof(ImageLoader),
- 0, /* n_preallocs */
- (GInstanceInitFunc)image_loader_init, /* instance_init */
- NULL /* value_table */
- };
- type = g_type_register_static(G_TYPE_OBJECT, "ImageLoaderType", &info, 0);
- }
- return type;
-}
-
-static void image_loader_init(GTypeInstance *instance, gpointer g_class)
-{
- ImageLoader *il = (ImageLoader *)instance;
-
- il->pixbuf = NULL;
- il->idle_id = 0;
- il->idle_priority = G_PRIORITY_DEFAULT_IDLE;
- il->done = FALSE;
- il->loader = NULL;
-
- il->bytes_read = 0;
- il->bytes_total = 0;
-
- il->idle_done_id = 0;
-
- il->idle_read_loop_count = IMAGE_LOADER_IDLE_READ_LOOP_COUNT_DEFAULT;
- il->read_buffer_size = IMAGE_LOADER_READ_BUFFER_SIZE_DEFAULT;
- il->mapped_file = NULL;
-
- il->requested_width = 0;
- il->requested_height = 0;
- il->shrunk = FALSE;
-
- il->can_destroy = TRUE;
-
-#ifdef HAVE_GTHREAD
- il->data_mutex = g_mutex_new();
- il->can_destroy_cond = g_cond_new();
-#endif
- DEBUG_1("new image loader %p, bufsize=%u idle_loop=%u", il, il->read_buffer_size, il->idle_read_loop_count);
-}
-
-static void image_loader_class_init(ImageLoaderClass *class)
-{
- GObjectClass *gobject_class = G_OBJECT_CLASS (class);
-
-// gobject_class->set_property = image_loader_set_property;
-// gobject_class->get_property = image_loader_get_property;
-
- gobject_class->finalize = image_loader_finalize;
-
-
- signals[SIGNAL_AREA_READY] =
- g_signal_new("area_ready",
- G_OBJECT_CLASS_TYPE(gobject_class),
- G_SIGNAL_RUN_LAST,
- G_STRUCT_OFFSET(ImageLoaderClass, area_ready),
- NULL, NULL,
- gq_marshal_VOID__INT_INT_INT_INT,
- G_TYPE_NONE, 4,
- G_TYPE_INT,
- G_TYPE_INT,
- G_TYPE_INT,
- G_TYPE_INT);
-
- signals[SIGNAL_ERROR] =
- g_signal_new("error",
- G_OBJECT_CLASS_TYPE(gobject_class),
- G_SIGNAL_RUN_LAST,
- G_STRUCT_OFFSET(ImageLoaderClass, error),
- NULL, NULL,
- g_cclosure_marshal_VOID__VOID,
- G_TYPE_NONE, 0);
-
- signals[SIGNAL_DONE] =
- g_signal_new("done",
- G_OBJECT_CLASS_TYPE(gobject_class),
- G_SIGNAL_RUN_LAST,
- G_STRUCT_OFFSET(ImageLoaderClass, done),
- NULL, NULL,
- g_cclosure_marshal_VOID__VOID,
- G_TYPE_NONE, 0);
-
- signals[SIGNAL_PERCENT] =
- g_signal_new("percent",
- G_OBJECT_CLASS_TYPE(gobject_class),
- G_SIGNAL_RUN_LAST,
- G_STRUCT_OFFSET(ImageLoaderClass, percent),
- NULL, NULL,
- g_cclosure_marshal_VOID__DOUBLE,
- G_TYPE_NONE, 1,
- G_TYPE_DOUBLE);
-
-}
-
-static void image_loader_finalize(GObject *object)
-{
- ImageLoader *il = (ImageLoader *)object;
-
- image_loader_stop(il);
-
- if (il->error) DEBUG_1("%s", image_loader_get_error(il));
-
- DEBUG_1("freeing image loader %p bytes_read=%d", il, il->bytes_read);
-
- if (il->idle_done_id)
- {
- g_source_remove(il->idle_done_id);
- il->idle_done_id = 0;
- }
-
- while (g_source_remove_by_user_data(il))
- {
- DEBUG_2("pending signals detected");
- }
-
- while (il->area_param_list)
- {
- DEBUG_1("pending area_ready signals detected");
- while (g_source_remove_by_user_data(il->area_param_list->data)) {}
- g_free(il->area_param_list->data);
- il->area_param_list = g_list_delete_link(il->area_param_list, il->area_param_list);
- }
-
- while (il->area_param_delayed_list)
- {
- g_free(il->area_param_delayed_list->data);
- il->area_param_delayed_list = g_list_delete_link(il->area_param_delayed_list, il->area_param_delayed_list);
- }
-
- if (il->pixbuf) g_object_unref(il->pixbuf);
-
- if (il->error) g_error_free(il->error);
-
- file_data_unref(il->fd);
-#ifdef HAVE_GTHREAD
- g_mutex_free(il->data_mutex);
- g_cond_free(il->can_destroy_cond);
-#endif
-}
-
-void image_loader_free(ImageLoader *il)
-{
- if (!il) return;
- g_object_unref(G_OBJECT(il));
-}
-
-
-ImageLoader *image_loader_new(FileData *fd)
-{
- ImageLoader *il;
-
- if (!fd) return NULL;
-
- il = (ImageLoader *) g_object_new(TYPE_IMAGE_LOADER, NULL);
-
- il->fd = file_data_ref(fd);
-
- return il;
-}
-
-/**************************************************************************************/
-/* send signals via idle calbacks - the callback are executed in the main thread */
-
-typedef struct _ImageLoaderAreaParam ImageLoaderAreaParam;
-struct _ImageLoaderAreaParam {
- ImageLoader *il;
- guint x;
- guint y;
- guint w;
- guint h;
-};
-
-
-static gboolean image_loader_emit_area_ready_cb(gpointer data)
-{
- ImageLoaderAreaParam *par = data;
- ImageLoader *il = par->il;
- g_signal_emit(il, signals[SIGNAL_AREA_READY], 0, par->x, par->y, par->w, par->h);
- g_mutex_lock(il->data_mutex);
- il->area_param_list = g_list_remove(il->area_param_list, par);
- g_free(par);
- g_mutex_unlock(il->data_mutex);
-
- return FALSE;
-}
-
-static gboolean image_loader_emit_done_cb(gpointer data)
-{
- ImageLoader *il = data;
- g_signal_emit(il, signals[SIGNAL_DONE], 0);
- return FALSE;
-}
-
-static gboolean image_loader_emit_error_cb(gpointer data)
-{
- ImageLoader *il = data;
- g_signal_emit(il, signals[SIGNAL_ERROR], 0);
- return FALSE;
-}
-
-static gboolean image_loader_emit_percent_cb(gpointer data)
-{
- ImageLoader *il = data;
- g_signal_emit(il, signals[SIGNAL_PERCENT], 0, image_loader_get_percent(il));
- return FALSE;
-}
-
-/* DONE and ERROR are emited only once, thus they can have normal priority
- PERCENT and AREA_READY should be processed ASAP
-*/
-
-static void image_loader_emit_done(ImageLoader *il)
-{
- g_idle_add_full(il->idle_priority, image_loader_emit_done_cb, il, NULL);
-}
-
-static void image_loader_emit_error(ImageLoader *il)
-{
- g_idle_add_full(il->idle_priority, image_loader_emit_error_cb, il, NULL);
-}
-
-static void image_loader_emit_percent(ImageLoader *il)
-{
- g_idle_add_full(G_PRIORITY_HIGH, image_loader_emit_percent_cb, il, NULL);
-}
-
-/* this function expects that il->data_mutex is locked by caller */
-static void image_loader_emit_area_ready(ImageLoader *il, guint x, guint y, guint w, guint h)
-{
- ImageLoaderAreaParam *par = g_new0(ImageLoaderAreaParam, 1);
- par->il = il;
- par->x = x;
- par->y = y;
- par->w = w;
- par->h = h;
-
- il->area_param_list = g_list_prepend(il->area_param_list, par);
-
- g_idle_add_full(G_PRIORITY_HIGH, image_loader_emit_area_ready_cb, par, NULL);
-}
-
-/**************************************************************************************/
-/* the following functions may be executed in separate thread */
-
-/* this function expects that il->data_mutex is locked by caller */
-static void image_loader_queue_delayed_erea_ready(ImageLoader *il, guint x, guint y, guint w, guint h)
-{
- ImageLoaderAreaParam *par = g_new0(ImageLoaderAreaParam, 1);
- par->il = il;
- par->x = x;
- par->y = y;
- par->w = w;
- par->h = h;
-
- il->area_param_delayed_list = g_list_prepend(il->area_param_delayed_list, par);
-}
-
-
-
-static gboolean image_loader_get_stopping(ImageLoader *il)
-{
- gboolean ret;
- if (!il) return FALSE;
-
- g_mutex_lock(il->data_mutex);
- ret = il->stopping;
- g_mutex_unlock(il->data_mutex);
-
- return ret;
-}
-
-
-static void image_loader_sync_pixbuf(ImageLoader *il)
-{
- GdkPixbuf *pb;
-
- g_mutex_lock(il->data_mutex);
-
- if (!il->loader)
- {
- g_mutex_unlock(il->data_mutex);
- return;
- }
-
- pb = gdk_pixbuf_loader_get_pixbuf(il->loader);
-
- if (pb == il->pixbuf)
- {
- g_mutex_unlock(il->data_mutex);
- return;
- }
-
- if (il->pixbuf) g_object_unref(il->pixbuf);
-
- il->pixbuf = pb;
- if (il->pixbuf) g_object_ref(il->pixbuf);
-
- g_mutex_unlock(il->data_mutex);
-}
-
-static void image_loader_area_updated_cb(GdkPixbufLoader *loader,
- guint x, guint y, guint w, guint h,
- gpointer data)
-{
- ImageLoader *il = data;
-
- if (!image_loader_get_pixbuf(il))
- {
- image_loader_sync_pixbuf(il);
- if (!image_loader_get_pixbuf(il))
- {
- log_printf("critical: area_ready signal with NULL pixbuf (out of mem?)\n");
- }
- }
-
- g_mutex_lock(il->data_mutex);
- if (il->delay_area_ready)
- image_loader_queue_delayed_erea_ready(il, x, y, w, h);
- else
- image_loader_emit_area_ready(il, x, y, w, h);
- g_mutex_unlock(il->data_mutex);
-}
-
-static void image_loader_area_prepared_cb(GdkPixbufLoader *loader, gpointer data)
-{
- GdkPixbuf *pb;
- guchar *pix;
- size_t h, rs;
-
- /* a workaround for http://bugzilla.gnome.org/show_bug.cgi?id=547669 */
- gchar *format = gdk_pixbuf_format_get_name(gdk_pixbuf_loader_get_format(loader));
- if (strcmp(format, "svg") == 0)
- {
- g_free(format);
- return;
- }
-
- g_free(format);
-
- pb = gdk_pixbuf_loader_get_pixbuf(loader);
-
- h = gdk_pixbuf_get_height(pb);
- rs = gdk_pixbuf_get_rowstride(pb);
- pix = gdk_pixbuf_get_pixels(pb);
-
- memset(pix, 0, rs * h); /*this should be faster than pixbuf_fill */
-
-}
-
-static void image_loader_size_cb(GdkPixbufLoader *loader,
- gint width, gint height, gpointer data)
-{
- ImageLoader *il = data;
- GdkPixbufFormat *format;
- gchar **mime_types;
- gboolean scale = FALSE;
- gint n;
-
- g_mutex_lock(il->data_mutex);
- if (il->requested_width < 1 || il->requested_height < 1)
- {
- g_mutex_unlock(il->data_mutex);
- return;
- }
- g_mutex_unlock(il->data_mutex);
-
- format = gdk_pixbuf_loader_get_format(loader);
- if (!format) return;
-
- mime_types = gdk_pixbuf_format_get_mime_types(format);
- n = 0;
- while (mime_types[n])
- {
- if (strstr(mime_types[n], "jpeg")) scale = TRUE;
- n++;
- }
- g_strfreev(mime_types);
-
- if (!scale) return;
-
- g_mutex_lock(il->data_mutex);
-
- if (width > il->requested_width || height > il->requested_height)
- {
- gint nw, nh;
-
- if (((gdouble)il->requested_width / width) < ((gdouble)il->requested_height / height))
- {
- nw = il->requested_width;
- nh = (gdouble)nw / width * height;
- if (nh < 1) nh = 1;
- }
- else
- {
- nh = il->requested_height;
- nw = (gdouble)nh / height * width;
- if (nw < 1) nw = 1;
- }
-
- gdk_pixbuf_loader_set_size(loader, nw, nh);
- il->shrunk = TRUE;
- }
- g_mutex_unlock(il->data_mutex);
-
-}
-
-static void image_loader_stop_loader(ImageLoader *il)
-{
- if (!il) return;
-
- if (il->loader)
- {
- /* some loaders do not have a pixbuf till close, order is important here */
- gdk_pixbuf_loader_close(il->loader, il->error ? NULL : &il->error); /* we are interested in the first error only */
- image_loader_sync_pixbuf(il);
- g_object_unref(G_OBJECT(il->loader));
- il->loader = NULL;
- }
- g_mutex_lock(il->data_mutex);
- il->done = TRUE;
- g_mutex_unlock(il->data_mutex);
-}
-
-static void image_loader_setup_loader(ImageLoader *il)
-{
- g_mutex_lock(il->data_mutex);
- il->loader = gdk_pixbuf_loader_new();
-
- g_signal_connect(G_OBJECT(il->loader), "area_updated",
- G_CALLBACK(image_loader_area_updated_cb), il);
- g_signal_connect(G_OBJECT(il->loader), "size_prepared",
- G_CALLBACK(image_loader_size_cb), il);
- g_signal_connect(G_OBJECT(il->loader), "area_prepared",
- G_CALLBACK(image_loader_area_prepared_cb), il);
- g_mutex_unlock(il->data_mutex);
-}
-
-
-static void image_loader_done(ImageLoader *il)
-{
- image_loader_stop_loader(il);
-
- image_loader_emit_done(il);
-}
-
-static void image_loader_error(ImageLoader *il)
-{
- image_loader_stop_loader(il);
-
- DEBUG_1("pixbuf_loader reported load error for: %s", il->fd->path);
-
- image_loader_emit_error(il);
-}
-
-static gboolean image_loader_continue(ImageLoader *il)
-{
- gint b;
- gint c;
-
- if (!il) return FALSE;
-
- c = il->idle_read_loop_count ? il->idle_read_loop_count : 1;
- while (c > 0 && !image_loader_get_stopping(il))
- {
- b = MIN(il->read_buffer_size, il->bytes_total - il->bytes_read);
-
- if (b == 0)
- {
- image_loader_done(il);
- return FALSE;
- }
-
- if (b < 0 || (b > 0 && !gdk_pixbuf_loader_write(il->loader, il->mapped_file + il->bytes_read, b, &il->error)))
- {
- image_loader_error(il);
- return FALSE;
- }
-
- il->bytes_read += b;
-
- c--;
- }
-
- if (il->bytes_total > 0)
- {
- image_loader_emit_percent(il);
- }
-
- return TRUE;
-}
-
-static gboolean image_loader_begin(ImageLoader *il)
-{
- gssize b;
-
- if (il->pixbuf) return FALSE;
-
- b = MIN(il->read_buffer_size, il->bytes_total - il->bytes_read);
- if (b < 1) return FALSE;
-
- image_loader_setup_loader(il);
-
- if (!gdk_pixbuf_loader_write(il->loader, il->mapped_file + il->bytes_read, b, &il->error))
- {
- image_loader_stop_loader(il);
- return FALSE;
- }
-
- il->bytes_read += b;
-
- /* read until size is known */
- while (il->loader && !gdk_pixbuf_loader_get_pixbuf(il->loader) && b > 0 && !image_loader_get_stopping(il))
- {
- b = MIN(il->read_buffer_size, il->bytes_total - il->bytes_read);
- if (b < 0 || (b > 0 && !gdk_pixbuf_loader_write(il->loader, il->mapped_file + il->bytes_read, b, &il->error)))
- {
- image_loader_stop_loader(il);
- return FALSE;
- }
- il->bytes_read += b;
- }
- if (!il->pixbuf) image_loader_sync_pixbuf(il);
-
- if (il->bytes_read == il->bytes_total || b < 1)
- {
- /* done, handle (broken) loaders that do not have pixbuf till close */
- image_loader_stop_loader(il);
-
- if (!il->pixbuf) return FALSE;
-
- image_loader_done(il);
- return TRUE;
- }
-
- if (!il->pixbuf)
- {
- image_loader_stop_loader(il);
- return FALSE;
- }
-
- return TRUE;
-}
-
-/**************************************************************************************/
-/* the following functions are always executed in the main thread */
-
-
-static gboolean image_loader_setup_source(ImageLoader *il)
-{
- struct stat st;
- gchar *pathl;
-
- if (!il || il->loader || il->mapped_file) return FALSE;
-
- il->mapped_file = NULL;
-
- if (il->fd)
- {
- ExifData *exif = exif_read_fd(il->fd);
-
- if (options->thumbnails.use_exif)
- il->mapped_file = exif_get_preview(exif, &il->bytes_total, il->requested_width, il->requested_height);
- else
- il->mapped_file = exif_get_preview(exif, &il->bytes_total, 0, 0); /* get the largest available preview image or NULL for normal images*/
-
- if (il->mapped_file)
- {
- il->preview = TRUE;
- DEBUG_1("Usable reduced size (preview) image loaded from file %s", il->fd->path);
- }
- exif_free_fd(il->fd, exif);
- }
-
-
- if (!il->mapped_file)
- {
- /* normal file */
- gint load_fd;
-
- pathl = path_from_utf8(il->fd->path);
- load_fd = open(pathl, O_RDONLY | O_NONBLOCK);
- g_free(pathl);
- if (load_fd == -1) return FALSE;
-
- if (fstat(load_fd, &st) == 0)
- {
- il->bytes_total = st.st_size;
- }
- else
- {
- close(load_fd);
- return FALSE;
- }
-
- il->mapped_file = mmap(0, il->bytes_total, PROT_READ|PROT_WRITE, MAP_PRIVATE, load_fd, 0);
- close(load_fd);
- if (il->mapped_file == MAP_FAILED)
- {
- il->mapped_file = 0;
- return FALSE;
- }
- il->preview = FALSE;
- }
-
- return TRUE;
-}
-
-static void image_loader_stop_source(ImageLoader *il)
-{
- if (!il) return;
-
- if (il->mapped_file)
- {
- if (il->preview)
- {
- exif_free_preview(il->mapped_file);
- }
- else
- {
- munmap(il->mapped_file, il->bytes_total);
- }
- il->mapped_file = NULL;
- }
-}
-
-static void image_loader_stop(ImageLoader *il)
-{
- if (!il) return;
-
- if (il->idle_id)
- {
- g_source_remove(il->idle_id);
- il->idle_id = 0;
- }
-
- if (il->thread)
- {
- /* stop loader in the other thread */
- g_mutex_lock(il->data_mutex);
- il->stopping = TRUE;
- while (!il->can_destroy) g_cond_wait(il->can_destroy_cond, il->data_mutex);
- g_mutex_unlock(il->data_mutex);
- }
-
- image_loader_stop_loader(il);
- image_loader_stop_source(il);
-
-}
-
-void image_loader_delay_area_ready(ImageLoader *il, gboolean enable)
-{
- g_mutex_lock(il->data_mutex);
- il->delay_area_ready = enable;
- if (!enable)
- {
- /* send delayed */
- GList *list, *work;
- list = g_list_reverse(il->area_param_delayed_list);
- il->area_param_delayed_list = NULL;
- g_mutex_unlock(il->data_mutex);
-
- work = list;
-
- while (work)
- {
- ImageLoaderAreaParam *par = work->data;
- work = work->next;
-
- g_signal_emit(il, signals[SIGNAL_AREA_READY], 0, par->x, par->y, par->w, par->h);
- g_free(par);
- }
- g_list_free(list);
- }
- else
- {
- /* just unlock */
- g_mutex_unlock(il->data_mutex);
- }
-}
-
-
-/**************************************************************************************/
-/* execution via idle calls */
-
-static gboolean image_loader_idle_cb(gpointer data)
-{
- gboolean ret = FALSE;
- ImageLoader *il = data;
-
- if (il->idle_id)
- {
- ret = image_loader_continue(il);
- }
-
- if (!ret)
- {
- image_loader_stop_source(il);
- }
-
- return ret;
-}
-
-
-static gboolean image_loader_start_idle(ImageLoader *il)
-{
- gboolean ret;
-
- if (!il) return FALSE;
-
- if (!il->fd) return FALSE;
-
- if (!image_loader_setup_source(il)) return FALSE;
-
- ret = image_loader_begin(il);
-
- if (ret && !il->done) il->idle_id = g_idle_add_full(il->idle_priority, image_loader_idle_cb, il, NULL);
- return ret;
-}
-
-/**************************************************************************************/
-/* execution via thread */
-static GThreadPool *image_loader_thread_pool = NULL;
-
-static GCond *image_loader_prio_cond = NULL;
-static GMutex *image_loader_prio_mutex = NULL;
-static gint image_loader_prio_num = 0;
-
-
-static void image_loader_thread_enter_high(void)
-{
- g_mutex_lock(image_loader_prio_mutex);
- image_loader_prio_num++;
- g_mutex_unlock(image_loader_prio_mutex);
-}
-
-static void image_loader_thread_leave_high(void)
-{
- g_mutex_lock(image_loader_prio_mutex);
- image_loader_prio_num--;
- if (image_loader_prio_num == 0) g_cond_broadcast(image_loader_prio_cond); /* wake up all low prio threads */
- g_mutex_unlock(image_loader_prio_mutex);
-}
-
-static void image_loader_thread_wait_high(void)
-{
- g_mutex_lock(image_loader_prio_mutex);
- while (image_loader_prio_num)
- {
- g_cond_wait(image_loader_prio_cond, image_loader_prio_mutex);
- }
-
- g_mutex_unlock(image_loader_prio_mutex);
-}
-
-
-static void image_loader_thread_run(gpointer data, gpointer user_data)
-{
- ImageLoader *il = data;
- gboolean cont;
-
- if (il->idle_priority > G_PRIORITY_DEFAULT_IDLE)
- {
- /* low prio, wait untill high prio tasks finishes */
- image_loader_thread_wait_high();
- }
- else
- {
- /* high prio */
- image_loader_thread_enter_high();
- }
-
- cont = image_loader_begin(il);
-
- if (!cont && !image_loader_get_pixbuf(il))
- {
- /*
- loader failed, we have to send signal
- (idle mode returns the image_loader_begin return value directly)
- (success is always reported indirectly from image_loader_begin)
- */
- image_loader_emit_error(il);
- }
-
- while (cont && !image_loader_get_is_done(il) && !image_loader_get_stopping(il))
- {
- if (il->idle_priority > G_PRIORITY_DEFAULT_IDLE)
- {
- /* low prio, wait untill high prio tasks finishes */
- image_loader_thread_wait_high();
- }
- cont = image_loader_continue(il);
- }
- image_loader_stop_loader(il);
-
- if (il->idle_priority <= G_PRIORITY_DEFAULT_IDLE)
- {
- /* high prio */
- image_loader_thread_leave_high();
- }
-
- g_mutex_lock(il->data_mutex);
- il->can_destroy = TRUE;
- g_cond_signal(il->can_destroy_cond);
- g_mutex_unlock(il->data_mutex);
-
-}
-
-
-static gboolean image_loader_start_thread(ImageLoader *il)
-{
- if (!il) return FALSE;
-
- if (!il->fd) return FALSE;
-
- il->thread = TRUE;
-
- if (!image_loader_setup_source(il)) return FALSE;
-
- if (!image_loader_thread_pool)
- {
- image_loader_thread_pool = g_thread_pool_new(image_loader_thread_run, NULL, -1, FALSE, NULL);
- image_loader_prio_cond = g_cond_new();
- image_loader_prio_mutex = g_mutex_new();
- }
-
- il->can_destroy = FALSE; /* ImageLoader can't be freed until image_loader_thread_run finishes */
-
- g_thread_pool_push(image_loader_thread_pool, il, NULL);
- DEBUG_1("Thread pool num threads: %d", g_thread_pool_get_num_threads(image_loader_thread_pool));
-
- return TRUE;
-}
-
-
-/**************************************************************************************/
-/* public interface */
-
-
-gboolean image_loader_start(ImageLoader *il)
-{
- if (!il) return FALSE;
-
- if (!il->fd) return FALSE;
-
-#ifdef HAVE_GTHREAD
- return image_loader_start_thread(il);
-#else
- return image_loader_start_idle(il);
-#endif
-}
-
-
-/* don't forget to gdk_pixbuf_ref() it if you want to use it after image_loader_free() */
-GdkPixbuf *image_loader_get_pixbuf(ImageLoader *il)
-{
- GdkPixbuf *ret;
- if (!il) return NULL;
-
- g_mutex_lock(il->data_mutex);
- ret = il->pixbuf;
- g_mutex_unlock(il->data_mutex);
- return ret;
-}
-
-gchar *image_loader_get_format(ImageLoader *il)
-{
- GdkPixbufFormat *format;
- gchar **mimev;
- gchar *mime;
-
- if (!il || !il->loader) return NULL;
-
- format = gdk_pixbuf_loader_get_format(il->loader);
- if (!format) return NULL;
-
- mimev = gdk_pixbuf_format_get_mime_types(format);
- if (!mimev) return NULL;
-
- /* return first member of mimev, as GdkPixbufLoader has no way to tell us which exact one ? */
- mime = g_strdup(mimev[0]);
- g_strfreev(mimev);
-
- return mime;
-}
-
-void image_loader_set_requested_size(ImageLoader *il, gint width, gint height)
-{
- if (!il) return;
-
- g_mutex_lock(il->data_mutex);
- il->requested_width = width;
- il->requested_height = height;
- g_mutex_unlock(il->data_mutex);
-}
-
-void image_loader_set_buffer_size(ImageLoader *il, guint count)
-{
- if (!il) return;
-
- g_mutex_lock(il->data_mutex);
- il->idle_read_loop_count = count ? count : 1;
- g_mutex_unlock(il->data_mutex);
-}
-
-void image_loader_set_priority(ImageLoader *il, gint priority)
-{
- if (!il) return;
-
- if (il->thread) return; /* can't change prio if the thread already runs */
- il->idle_priority = priority;
-}
-
-
-gdouble image_loader_get_percent(ImageLoader *il)
-{
- gdouble ret;
- if (!il) return 0.0;
-
- g_mutex_lock(il->data_mutex);
- if (il->bytes_total == 0)
- {
- ret = 0.0;
- }
- else
- {
- ret = (gdouble)il->bytes_read / il->bytes_total;
- }
- g_mutex_unlock(il->data_mutex);
- return ret;
-}
-
-gboolean image_loader_get_is_done(ImageLoader *il)
-{
- gboolean ret;
- if (!il) return FALSE;
-
- g_mutex_lock(il->data_mutex);
- ret = il->done;
- g_mutex_unlock(il->data_mutex);
-
- return ret;
-}
-
-FileData *image_loader_get_fd(ImageLoader *il)
-{
- FileData *ret;
- if (!il) return NULL;
-
- g_mutex_lock(il->data_mutex);
- ret = il->fd;
- g_mutex_unlock(il->data_mutex);
-
- return ret;
-}
-
-gboolean image_loader_get_shrunk(ImageLoader *il)
-{
- gboolean ret;
- if (!il) return FALSE;
-
- g_mutex_lock(il->data_mutex);
- ret = il->shrunk;
- g_mutex_unlock(il->data_mutex);
- return ret;
-}
-
-const gchar *image_loader_get_error(ImageLoader *il)
-{
- const gchar *ret = NULL;
- if (!il) return NULL;
- g_mutex_lock(il->data_mutex);
- if (il->error) ret = il->error->message;
- g_mutex_unlock(il->data_mutex);
- return ret;
-}
-
-
-/* FIXME - this can be rather slow and blocks until the size is known */
-gboolean image_load_dimensions(FileData *fd, gint *width, gint *height)
-{
- ImageLoader *il;
- gboolean success;
-
- il = image_loader_new(fd);
-
- success = image_loader_start_idle(il);
-
- if (success && il->pixbuf)
- {
- if (width) *width = gdk_pixbuf_get_width(il->pixbuf);
- if (height) *height = gdk_pixbuf_get_height(il->pixbuf);;
- }
- else
- {
- if (width) *width = -1;
- if (height) *height = -1;
- }
-
- image_loader_free(il);
-
- return success;
-}
-/* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */
projects / geeqie.git / blobdiff